Ruffling mechanism for sewing machines



July-21, 1931; A B, L'AYTON 1,815,881

RUFFLING MECHANISM FOR SEWING MACHINES y Q7: l Andrew laytam @83j l l a4`- July 21, 1931. n n A. B. CLAYTON j 1,815,881 RUFFLING-MECHANISM FOR SEWING MACHINES I Filed Nov. 1a, 1929 s sheets-sheet vr:

Wfl/MSM@ -l v v- Analre1111915'.Claytonv dbkomg July 2l, 1931. A. B. CLAYTON 1,315,881.l l RUFFLING MECHANISM FOR SEWING MACHINES Filed Nov. 18. 1929 3 Sheets-Sheet 3 Patented July 21, 129371 rss Y ANDREW' B. CLAYTON, voii'KUNioN, NEWJERsEmAssiGNon To THE siNGER MANU-L FACTURING COMPANY,vr '0E ELIZABETH, NEwpJERsEmVA CoRroiinTioN oi` NEW JERSEY 'EUEFLING MECHANISM EoiefsEvvING MACHINES Appiioaenimea November 18,' vksiifnivo.; 407,837.

This rinvention relates to sewing machine ruiiler'mechanisms and has for an object to edkfor application to a sewing machine h avfk iii/ga lower horizontal main-shaftAccording to the'improvement there is mounted on the provide a simplied form ofstreadle-controlled ruil'ler mechanism particularly adaptsewing machine gooseneck and upper yruiigleractuating rock-shaft disposed in a vertical plane offset from the lower main-shaft. The ruiiier rock-shaft has lixedto it al curvedl crank-arm concentric with the main-"shaft and extending toward the vertical plane of' the 'main-shaft. Themain-shaft is provided with an eccentric between the 'usual `balance wheel and the vertical member ofthe goose-y neck, and a verticalpitman'embracing such eccentric isl connected to the crank-arm on` ,they ruiiler rock-shaft.; kThe connectionY in.

question is a frictional sliding kone 'and the distanceoof such connection fromthe axis of Y i Vtheruflier rock-shaft maybe varied atthe Y will of the operator, to vary the stroke ofthe f ruliier blade. The treadle-control mechanism comprises a bellcrank lever fulcrumed oni a bracket `attached to the gooseneck and hav-`r a vhorizontal yarin-k connected to aftreadle chainand a vertical armconnected by a link 'n n. vto the slide-block atth'eL upper end of the ruffler-actuating pitman.` Y The bracket which carries the treadle-controlled bell-crank lever also carries -two verticallyy adjustable stops toliinit the movement'of the bell-crank lever and enable thel operatorto quickly' shift from4 Y a predetermined long 'ruHer-stroke `toa pre-j determined short ruffler-stroke.

Referring tothe accompanying drawings, Fig. is a sideelevation of a sewing machine embodying the invention.y Fig. 2 isfa front end 'elevation of the machine. B is' a rearend' elevation ofk theimachine.' Fig. 4

is a top plan viewv of the rear or balance wheel end of the, machine.,k Fig. 5 isa section on the line 5 5, Fig. V3,V and Figi 6 is a sectionjon the-line (5v-6",l Fig. 1';

In the `embodiment ofl he invention illus-` trated there is used a sewing ymachine having a bed l, from which risesthe standard 2 of' the gooseneckv including the over-hanging v "ni arm 3 terminating in the` head4fin `which is 'f mounted the usual reciprocating needleebar 5 and presser-bar 6 carrying,'respectivelyhe- `needle 7 and presser-foot 8;v The'mach-ine has a raisedcloth-plateq) below which-and'` above the bed '1 isejournaled the main-shaft 10, the. outboard projectionfof which carries;

the yiruiiler-actuating eccentric' and balance wheel 12.

The ruilier mechanism adjacentthe head*y 4'is old, per se, and comprises vthe usualy separator-plate 13 above which works the ruffler-blade 14 pivotally' carriedat 15 at the lower end of the ruflier-arm'l' fixed to the 7 forward end of the' rullier rock-shaft 17, which is.. journaled 'horizontally in bearingsk 18, r19;.:at the'front sideof the gooseiiec'k in a vertical plane pL'Fig. 35 ofl'set'to theleftr dal armf201e'xtends across thespace betweenthei vplaii'esp'and s and fis actuated'by thevertrf cal pitman-f211embracing theactuating eccenpitman 21 yis connected at its upper end to ayoke 22; connected by the pivot-pinvr 23 tothe block 24 having a slide-way25 for the' curved l'arm 20. y"The upper sidewall of theslide-way' 25'. is constitutedby an adjustable wear-plate 26 kbacked by the. adjusting screw 27 'The front sideofthejslide-way 25 is closed bya capeplate 28having afprojectingpin' 29 ein' bracedf'by one vendofv the horizontal link -30l .theYV other end' .offwhich is'pivotafllyconnected 4 ,at 31` tothe upstan'jding arm l32 of a bell-crank l lever-` 32,; 38 fulcrumed at34'on the'bracket Which carries the J bearing 18. The arm '35 Y, of thebellecrank'lever extendsforwardly and 1' hasconnected thereto the' treadle-chain 36.'.

screw 314 andanchored at its opposite endsfto the arm'33 and bracket 35,' respectively, urges the bell-crank lever to the short rutile position l shown in Fig.3,'whenpressureuponthe opk s eratingftreadleis relieved. 1

.i Secured tothe front face ofthe bracket 35,7" y'bythe yscrewiS is thek slottedv shank 39 ofthe y'llheiecovery spring 37 coiled about 4the'. pivote(V stop-arm 40 which is engaged by the vbellcrank lever-arm 33 in the upward or recovery motion of the latter. The position of the stop 40 determines the amplitude of the short ruffle. Secured to the right-hand face of the bracket 35 by the screw il is the slotted shank 42 of the stopearm 43'which limits the downward movement of the bell-crank lever-arm Y 33 and determines the amplitude of the long ruffle.l Y v l Y It will be observed thatl the stop-arms' 40, 43, bell-crank lever 32,33, spring 37, shaft 17 rock-shaft, and stops adjustably mounted on said bracket to limit the movement of said bell-crank lever in opposite directions.V

In testimony whereof,"I havesig'ned my name to thisl specification.

ANDREW B.. CLAYTON. l

` and arm 2() are all carried bythe removable I' j bracket 35, enabling them to be readily applied to or removed from the sewing machine and that the arrangement is Ysimple and compact.V Y

f [Having thus set forth the nature of the'int bed andV ,Y gooseneck, ac'loth-plate-raisedv` above ,saidVV vention, what I claim herein is f 15A'. sewing; machine having a bed, almain-shaftjournaled kbetween said bed and cloth-plate, a miller-blade, aruflerrock-A shaft connected to `reciprocate, said blade and journaled on said gooseneck, said rock-shaft being disposed 'in a vertical plane parallel to and offset'fr'om the vertical plane ofthe -main-shaft, acrank-arm Xed to said rullier rock-shaft and extending transversely ofthe space between said planes, anY eccentric on saidfmain-shaft, anV upstanding pitman the lower end of which embraces saidV eccentric and the upper end; of which .is connected vto saidfcrank-arm, anda treadlecontrolled bellcrank lever connected to shift the upper'end,

o f s ai'dpitmanlengthwise of said crank arm.

Z -Avsewinginachine lfiavingacloth-plate:y

and` an overlianging goosenecln a main-shaft jonrnaled below :said Acloth yplate, a ruiierf rock-,shaft journaled on said goos'eneck in 'a I vertical 'plane displacedV from the vertical plane ofthe main-shaft, a crank-arm fixed t0 the ruffler rock-shaft and extendingacross the j spacebetween said planes, :an eccentricfon said main-shaft, a pitman connected atits lower end to 'said eccentric, a connecting ele-` ment pivotedto the upper end of said pit'- man and slidably engaging said crank-arm, a t. treadle controlled'bell-crank lever including' an yupstanding arm,`a link connection between said upstanding armiand'said connectingelel ment, and a ruiflereblade'actuated'.byaidxz;

sewing machinehavinga .andivr i 't ably mounted on saidgooseneck, a crank-army Y Xed'to said rock-shaft ad] acent said bearing 1 bracket, a main-shaft, an. eccentric on saidV Y main-shaft', a pitman connection between said i eccentric and said crank-arm, aztreadle-controlledibell-cranklever fulcrumed on said Y bracket andiconneoted toshift the ,pointV of connection. of the pitmanf with the crank-arm towald QIg' awaypfromthe axis of said'ruifler r'igooseneck, avruiler-blade, a rufler roclbshaft, i ajbearin'g bracket for said rock-shaft detach- Y 

